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Everyday Life Calculators

Toothpaste Usage Calculator

Estimate how many days a tube of toothpaste will last based on how much is used per brushing.

A standard 4.6 oz tube is about 130 grams
A pea-sized amount is roughly 0.5-1 gram
Days per tube —
Tubes per year —
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About the Toothpaste Usage Calculator

How long a tube of toothpaste lasts depends on the tube's total weight and how much you squeeze out each time you brush.

Formula: Days per Tube = Tube Size (g) ÷ (Grams per Brushing × Brushings per Day)

Most people use far more than the recommended pea-sized amount, so cutting back slightly can meaningfully stretch a tube's lifespan and cut yearly toothpaste costs.

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